Wrench.



PATENTED APR. 10, 1906.

W. H. ZACHAEY.

WRENCH.

APPLICATION FILED SBPT.20, 1905.

fla /12% Witnesses Inventon Attorneys TIETTEU STATES PATENT UEEIGE.

WILLIAM H. ZAUHARY, OF MAYSVILLE, INDIAN TERRITORY, ASSIGNOR OF ONE-HALFTO DAVID R. MITCHELL, OF MAYSVILLE, INDIAN TERRITORY.

WRENCH.

Specification of Letters Patent.

Patented April 10, 1906.

To all whom it may concern:

Be it known that I, WILLIAM H. ZACHARY, a citizen of the United States,residing at Maysville, District 17, Indian Territory, have invented anew and useful Wrench, of which the following is a specification.

This invention relates to wrenches, and has for an object to provide awrench embodying new and improved features of convenience, simplicity,utility, and efficiency.

A further object of the invention is to provide a wrench embodyingimproved means whereby the traveling jaw automatically adjusts itself tothe work upon being released.

Specifically the object of the invention is to provide a wrench havingthe usual rigid shank and outer jaw and fitted with a handle having asocket with a spring in it and a traveling jaw having a threaded rackextending into the socket and against the spring and a spring-controlledhalf-nut for engaging the rack and holding the jaw.

With these and other objects in view the present invention consists inthe combination and arrangement of parts, as will be hereinafter fullydescribed, shown in the accompanying drawings, and particularly pointedout in the appended claim, it being understood that changes in the form,proportion, size, and minor details may be made without departing fromthe spirit or sacrificing any of the advantages of this invention.

In the drawings, Figure 1 is a perspective view of the improved wrenchwith a portion of the socket-casing broken away to show the spring. Fig.2 is a transverse sectional view pi the improved wrench, taken on line 22 of Like characters of reference indicate corresponding parts in bothfigures of the draw- 111 's.

In its preferred embodiment the improved wrench forming the sub ject-matter of this application comprises a rigid shank 10, pro videdwith the usual angular rigid jaw 11, the handle 12, secured in anyapproved manner, as by the nut 18. The handle is provided with an oflsetportion 14, in which is formed a socket 15, substantially parallel withthe shank 10. Upon the shank is slidably mounted the traveling jaw 16,having a spindle or rack 17, extending within the socket 15 andprovided. with the threads 18. Within the socket 15, is disposed thespring 19, bearing against the bottom of the socket and the end of therack 17.

The offset portion 14 is provided with a transverse aperture 20,communicating with the socket 15, and therein is disposed the halfnut21, arranged to engage the threaded rack 17 and mounted upon the lever22. The lever 22 is pivoted to the handle at 23 by means of the offsetportion 24, and a spring 25 is disposed beneath the end opposite thehal1-nut. By depressing the end of the lever 22, as shown in dottedposition in Fig. 2, the rack 17 is released and the jaw 16 may beslidably moved upon the shank 10. To adjust the wrench to the work, itis placed with the jaw 11 against the nut and the lever 22 depressed,thereby releasing the spring, and the spring 19 forces the jaw 16against the nut, when by releasing the lever 22 it is locked in suchposition. When the nut has been sufficiently tightened, the lever isagain depressed and the wrench moved angularly about the nut, whichforces the jaws open, and by releasing the lever the jaws are lockedopen. It will thus be seen that ordinarily all that is necessary toadjust the wrench is to press upon the lever 22, making a veryconvenient and eificient tool.

Having thus described the invention, what I is claimed is A wrenchcomprising a rigid shank and outer jaw, a handle mounted upon the shankand provided with a socket a movable jaw slidably mounted upon the shankand having a rigid threaded rack extending slidably within the socket aspring within the socket and bearing against the end of the screw anddisposed to force the movable jaw to the outer extreme of its movement,a pivoted half-nut arranged to engage and hold the screw and aspring-pressed lever pivoted to the side of the handle and arranged tomanipulate the hallnut.

In testimony that I claim the foregoing as my own I have hereto afiixedmy signature in the presence of two witnesses.

WILLIAM H. ZACHARY.

Witnesses:

F. O. Coon, W. C. HIGH.

